4 files changed, 7 insertions, 7 deletions
diff --git a/src/main/java/kr/syeyoung/dungeonsguide/stomp/StompClient.java b/src/main/java/kr/syeyoung/dungeonsguide/stomp/StompClient.java
index 7e8d89f6..9a4becf6 100644
--- a/src/main/java/kr/syeyoung/dungeonsguide/stomp/StompClient.java
+++ b/src/main/java/kr/syeyoung/dungeonsguide/stomp/StompClient.java
@@ -35,7 +35,7 @@ public class StompClient extends WebSocketClient implements StompInterface {
         while(this.stompClientStatus == StompClientStatus.CONNECTING);
         System.out.println("fully connected");
     }
-    private CloseListener closeListener;
+    private final CloseListener closeListener;
 
     @Getter
     private volatile StompClientStatus stompClientStatus = StompClientStatus.CONNECTING;
@@ -103,8 +103,8 @@ public class StompClient extends WebSocketClient implements StompInterface {
         ex.printStackTrace();
     }
 
-    private Map<Integer, StompSubscription> stompSubscriptionMap = new HashMap<Integer, StompSubscription>();
-    private Map<Integer, StompPayload> receiptMap = new HashMap<Integer, StompPayload>();
+    private final Map<Integer, StompSubscription> stompSubscriptionMap = new HashMap<Integer, StompSubscription>();
+    private final Map<Integer, StompPayload> receiptMap = new HashMap<Integer, StompPayload>();
 
     private int idIncrement = 0;
 
diff --git a/src/main/java/kr/syeyoung/dungeonsguide/stomp/StompClientStatus.java b/src/main/java/kr/syeyoung/dungeonsguide/stomp/StompClientStatus.java
index b3f5cbc2..09390c2b 100644
--- a/src/main/java/kr/syeyoung/dungeonsguide/stomp/StompClientStatus.java
+++ b/src/main/java/kr/syeyoung/dungeonsguide/stomp/StompClientStatus.java
@@ -1,5 +1,5 @@
 package kr.syeyoung.dungeonsguide.stomp;
 
 public enum  StompClientStatus {
-    CONNECTING, CONNECTED, ERROR, DISCONNECTING, DISCONNECTED;
+    CONNECTING, CONNECTED, ERROR, DISCONNECTING, DISCONNECTED
 }
diff --git a/src/main/java/kr/syeyoung/dungeonsguide/stomp/StompPayload.java b/src/main/java/kr/syeyoung/dungeonsguide/stomp/StompPayload.java
index 19dd4ac1..6672853c 100644
--- a/src/main/java/kr/syeyoung/dungeonsguide/stomp/StompPayload.java
+++ b/src/main/java/kr/syeyoung/dungeonsguide/stomp/StompPayload.java
@@ -35,7 +35,7 @@ public class StompPayload {
         if (payload != null)
             sb.append(payload);
         sb.append((char) 0);
-        System.out.println("Probably sending "+sb.toString());
+        System.out.println("Probably sending "+ sb);
         return sb.toString();
     }
 
diff --git a/src/main/java/kr/syeyoung/dungeonsguide/stomp/StompSubscription.java b/src/main/java/kr/syeyoung/dungeonsguide/stomp/StompSubscription.java
index 5ecbeb06..0bbfec01 100644
--- a/src/main/java/kr/syeyoung/dungeonsguide/stomp/StompSubscription.java
+++ b/src/main/java/kr/syeyoung/dungeonsguide/stomp/StompSubscription.java
@@ -14,10 +14,10 @@ public class StompSubscription {
     private AckMode ackMode;
 
     @AllArgsConstructor
-    public static enum AckMode {
+    public enum AckMode {
         AUTO("auto"), CLIENT("client"), CLIENT_INDIVIDUAL("client-individual");
 
         @Getter
-        private String value;
+        private final String value;
     }
 }